Magisk/app/src/main/java/com/topjohnwu/magisk/utils/Topic.java

109 lines
3.3 KiB
Java

package com.topjohnwu.magisk.utils;
import androidx.annotation.IntDef;
import com.topjohnwu.superuser.internal.UiThreadHandler;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.util.HashSet;
import java.util.Set;
public class Topic {
public static final int MAGISK_HIDE_DONE = 0;
public static final int MODULE_LOAD_DONE = 1;
public static final int REPO_LOAD_DONE = 2;
public static final int UPDATE_CHECK_DONE = 3;
public static final int LOCALE_FETCH_DONE = 4;
@IntDef({MAGISK_HIDE_DONE, MODULE_LOAD_DONE, REPO_LOAD_DONE,
UPDATE_CHECK_DONE, LOCALE_FETCH_DONE})
@Retention(RetentionPolicy.SOURCE)
public @interface TopicID {}
// We will not dynamically add topics, so use arrays instead of hash tables
private static Store[] topicList = new Store[5];
public static void subscribe(Subscriber sub, @TopicID int... topics) {
for (int topic : topics) {
if (topicList[topic] == null)
topicList[topic] = new Store();
topicList[topic].subscribers.add(sub);
if (topicList[topic].published) {
sub.onPublish(topic, topicList[topic].results);
}
}
}
public static void subscribe(AutoSubscriber sub) {
subscribe(sub, sub.getSubscribedTopics());
}
public static void unsubscribe(Subscriber sub, @TopicID int... topics) {
for (int topic : topics) {
if (topicList[topic] == null)
continue;
topicList[topic].subscribers.remove(sub);
}
}
public static void unsubscribe(AutoSubscriber sub) {
unsubscribe(sub, sub.getSubscribedTopics());
}
public static void publish(@TopicID int topic, Object... results) {
publish(true, topic, results);
}
public static void publish(boolean persist, @TopicID int topic, Object... results) {
if (topicList[topic] == null)
topicList[topic] = new Store();
if (persist) {
topicList[topic].results = results;
topicList[topic].published = true;
}
for (Subscriber sub : topicList[topic].subscribers) {
UiThreadHandler.run(() -> sub.onPublish(topic, results));
}
}
public static void reset(@TopicID int... topics) {
for (int topic : topics) {
if (topicList[topic] == null)
continue;
topicList[topic].published = false;
topicList[topic].results = null;
}
}
public static boolean isPublished(@TopicID int... topics) {
for (int topic : topics) {
if (topicList[topic] == null)
return false;
if (!topicList[topic].published)
return false;
}
return true;
}
public static boolean isPublished(AutoSubscriber sub) {
return isPublished(sub.getSubscribedTopics());
}
private static class Store {
boolean published = false;
Set<Subscriber> subscribers = new HashSet<>();
Object[] results;
}
public interface Subscriber {
void onPublish(int topic, Object[] result);
}
public interface AutoSubscriber extends Subscriber {
@TopicID
int[] getSubscribedTopics();
}
}